JPH08251741A - Electric-wire tension tool - Google Patents
Electric-wire tension toolInfo
- Publication number
- JPH08251741A JPH08251741A JP5634395A JP5634395A JPH08251741A JP H08251741 A JPH08251741 A JP H08251741A JP 5634395 A JP5634395 A JP 5634395A JP 5634395 A JP5634395 A JP 5634395A JP H08251741 A JPH08251741 A JP H08251741A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- electric wire
- valve
- hydraulic
- hydraulic pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- Actuator (AREA)
- Electric Cable Installation (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、隣接する電柱の間に張
られた電線の補修などの際に使用される電設用工具に係
り、特に、既設電柱に張られた電線を新設電柱に移し替
える際に、電線の引張力を一定に保ち移動できる電線引
張具（所謂アジャスタブルプーラ）に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric installation tool used for repairing electric wires stretched between adjacent electric poles, and more particularly to moving electric wires stretched over existing electric poles to new electric poles. The present invention relates to an electric wire pulling tool (a so-called adjustable puller) that can move an electric wire while maintaining a constant pulling force.
【０００２】[0002]
【従来の技術】従来、この種の電線引張具としては、例
えば以下に述べるようなものがある。すなわち、この従
来の電線引張具は、シャフトを挿通した筒状支持体と、
シャフトの先端及びその反対側の筒状支持体の先端に取
り付けられた一対の電線把持部と、筒状支持体の外面に
設けられてシャフトを駆動させる操作部とを有して構成
されており、操作部を手動で回転すると、シャフトが伸
縮するようになっている。2. Description of the Related Art Conventionally, as an electric wire pulling device of this type, there is, for example, the one described below. That is, this conventional electric wire pulling tool has a tubular support body through which a shaft is inserted,
It comprises a pair of electric wire grips attached to the tip of the shaft and the tip of the tubular support on the opposite side thereof, and an operating portion provided on the outer surface of the tubular support to drive the shaft. The shaft is designed to expand and contract when the operating part is rotated manually.
【０００３】このような従来の電線引張具は、例えば、
以下に述べるように、既設電柱に張られた電線を新設電
柱に移し替える作業に使用することができる。先ず、既
設電柱に張られた電線に一対の電線把持部を離して取り
付けると共に、予め停電時間を短縮するためにバイパス
ケーブルを取り付け、さらに電線を固定している既設電
柱のバインド線を取り外して一対の電線把持部の間の電
線を切断する。次いで、電線を把持した電線引張具を新
設電柱に移動して切断した電線の間に新たな電線を足し
て接続し、電線をバインド線で新設電柱に取り付ける。
さらに、バイパスケーブルと一対の電線把持部を取り外
し、既設電柱に張られた電線を新設電柱に移し替える作
業を完了することができる。Such a conventional electric wire pulling tool is, for example,
As described below, it can be used for the work of transferring an electric wire stretched over an existing utility pole to a new utility pole. First, attach a pair of wire grippers separately to the electric wire stretched over the existing utility pole, attach a bypass cable in advance to shorten the power outage time, and remove the binding wire of the existing utility pole that secures the electric wire. Cut the wire between the wire grips. Next, the electric wire pulling tool holding the electric wire is moved to the new utility pole, a new electric wire is added between the cut electric wires, and the electric wire is attached to the new electric pole with the bind wire.
Further, the work of removing the bypass cable and the pair of electric wire grips and transferring the electric wire stretched over the existing electric pole to the new electric pole can be completed.
【０００４】[0004]
【発明が解決しようとする課題】ところで、電線を把持
した電線引張具を既設電柱から新設電柱に移動する際に
は、電線の長さが変化して電線の引張力が変化するが、
電線の引張力が大き過ぎると電線が切断等の損傷を起こ
し、逆に、電線の引張力が小さ過ぎると電線の弛みが大
きくなり、他の電線に接触して安全上、好ましくはな
い。このため、上記の従来の電線引張具にあっては、電
線を把持した電線引張具を新設電柱に移動する際に、電
線の引張力が変化する都度、操作部を手動で又は他の動
力源で回転してシャフトを伸縮し、電線の引張力を一定
に保持せねばならず、操作が煩雑であり、作業性を著し
く低下させるものであった。By the way, when the electric wire pulling tool that holds the electric wire is moved from the existing electric pole to the new electric pole, the length of the electric wire changes and the tensile force of the electric wire changes.
If the tensile force of the electric wire is too large, the electric wire will be damaged, such as cutting. On the contrary, if the tensile force of the electric wire is too small, the electric wire will be loosened greatly, and it is not preferable for safety because it comes into contact with other electric wires. Therefore, in the above-described conventional wire tensioning tool, when the wire tensioning tool holding the wire is moved to the new utility pole, whenever the tension of the wire changes, the operation unit is manually operated or another power source is used. It was necessary to rotate the shaft to expand and contract the shaft to keep the tensile force of the electric wire constant, the operation was complicated, and the workability was remarkably reduced.
【０００５】本発明は、このような従来の問題点に鑑み
てなされたもので、特に、既設電柱に張られた電線を新
設電柱に移し替える際に、容易な操作で電線の引張力を
常に所定の引張力に保持し移動することができる電線引
張具の提供を目的とする。The present invention has been made in view of such conventional problems, and in particular, when transferring an electric wire stretched over an existing electric pole to a new electric pole, the pulling force of the electric wire is always maintained by an easy operation. An object of the present invention is to provide an electric wire pulling tool that can be moved while being held at a predetermined pulling force.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明は、既設電柱に張られた電線を新設電柱に移し
替える等の際に使用され電線の引張力を調整する電線引
張具であって、バッテリを有する充電式油圧ポンプと、
前記充電式油圧ポンプの吐出圧力を制御する弁装置と、
前記弁装置の本体の左右側両端から略一直線上に延設し
た一対の筒状支持体と、前記一対の筒状支持体の各先端
部に一体的に構成され、前記弁装置を介して伝達される
前記充電式油圧ポンプの吐出圧力により左右方向へ伸縮
自在な油圧シリンダと、前記充電式油圧ポンプに作動油
を供給すると共に、前記弁装置から排出された作動油を
受け入れる油タンクと、前記左右両側の油圧シリンダの
先端に取り付けられた電線把持部と、を備えて成ること
を特徴とするものである。In order to achieve the above object, the present invention is an electric wire tensioning tool for adjusting the tensile force of an electric wire which is used when an electric wire stretched over an existing electric pole is transferred to a new electric pole. And a rechargeable hydraulic pump with a battery,
A valve device for controlling the discharge pressure of the rechargeable hydraulic pump,
A pair of cylindrical supports extending substantially straight from the left and right ends of the main body of the valve device, and integrally formed at respective tip portions of the pair of cylindrical supports, and transmitted via the valve device. A hydraulic cylinder that can expand and contract in the left-right direction by the discharge pressure of the rechargeable hydraulic pump, an oil tank that supplies hydraulic oil to the rechargeable hydraulic pump, and that receives hydraulic oil discharged from the valve device; An electric wire gripping part attached to the tip of the hydraulic cylinders on both the left and right sides.
【０００７】また、前記弁装置は、前記充電式油圧ポン
プから吐出された作動油を前記左右両側の油圧シリンダ
へ導く導入路と、前記導入路から分岐し、前記充電式油
圧ポンプ及び前記左右両側の油圧シリンダから吐出され
た作動油を前記油タンクへ導く導出路と、前記導出路に
設置され前記導出路を開閉するストップ弁と、前記スト
ップ弁より下流側の導出路に設置され前記導出路を開閉
する戻し弁と、前記ストップ弁と前記戻し弁との間の導
出路に取り付けられ、前記導出路内の圧力が設定圧力を
越えると、開弁して前記導入路内の作動油を排出し、前
記導入路内の圧力を設定圧力に低下させるリリーフ弁
と、前記ストップ弁と前記戻し弁との間の導出路に取り
付けられ、前記リリーフ弁の開弁圧力より低い圧力でＯ
Ｎ、ＯＦＦ作動して充電式油圧ポンプを始動、停止させ
る圧力スイッチと、前記ストップ弁より上流側の導入路
に取り付けられ、前記リリーフ弁の開弁圧力より高い所
定圧力で開き、この所定圧力以下に導入路内の圧力を低
下させる安全弁と、から成ることとした。Further, the valve device has an introduction path for guiding the hydraulic oil discharged from the rechargeable hydraulic pump to the left and right hydraulic cylinders, and a branch from the introduction path to connect the rechargeable hydraulic pump and the left and right left and right sides. Of the hydraulic cylinder discharged from the hydraulic cylinder to the oil tank, a stop valve installed in the discharge path for opening and closing the discharge path, and a discharge path installed in the discharge path downstream of the stop valve. Is attached to a return valve between the stop valve and the return valve for opening and closing the valve, and when the pressure in the guide passage exceeds a set pressure, the valve is opened to discharge the hydraulic oil in the guide passage. However, the relief valve for reducing the pressure in the introduction passage to the set pressure and the discharge passage between the stop valve and the return valve are attached to the relief valve at a pressure lower than the opening pressure of the relief valve.
N, OFF pressure switch for starting and stopping the rechargeable hydraulic pump, and a pressure switch attached to an inlet passage upstream of the stop valve, opened at a predetermined pressure higher than the relief valve opening pressure, and below this predetermined pressure It was decided to consist of a safety valve that reduces the pressure in the introduction path.
【０００８】さらに、前記充電式油圧ポンプおよび前記
バッテリは、前記一対の筒状支持体の間に取り付け、前
記油タンクは、前記弁装置本体と前記油圧シリンダとの
間の前記筒状支持体の内部に設けることとした。Further, the rechargeable hydraulic pump and the battery are mounted between the pair of tubular supports, and the oil tank is connected to the tubular support between the valve device body and the hydraulic cylinder. I decided to install it inside.
【０００９】さらに、前記油圧シリンダは、シリンダ内
に嵌合したピストンを該シリンダの外方へ付勢する圧縮
ばねを有することとした。Further, the hydraulic cylinder has a compression spring for urging the piston fitted in the cylinder outward of the cylinder.
【００１０】[0010]
【作用】例えば、隣接する電柱の間に張られた電線に電
線引張具を取り付けて、電線を切断する。そして、スト
ップ弁を開き、操作スイッチを入れ充電式油圧ポンプを
始動すると、油タンク内の作動油が充電式油圧ポンプに
吸入され、圧油となって充電式油圧ポンプから弁装置の
導入路に吐出される。この導入路に吐出され圧油は、左
右両側の油圧シリンダに導かれ、シリンダに内蔵された
圧縮バネの付勢力に抗して各油圧シリンダを短縮させ、
左右両側の電線把持部の間隔が狭められる。このため、
左右両側の電線が電線把持部に把持され弛緩なく張られ
る。そして、導入路内の圧力が、例えば１００kgｆ／cm
2 に上昇すると、圧力スイッチがＯＦＦ作動して充電式
油圧ポンプが停止する。電線の引張力が下がり、導入路
内の圧力が例えば１００kgｆ／cm2 未満に低下すると、
圧力スイッチがＯＮ作動し充電式油圧ポンプが再び始動
し導入路内の圧力が上昇して左右両側の油圧シリンダが
短縮する。このため、電線の引張力は、常時、設定引張
力１００kgｆ／cm2 を保持することができる。Operation: For example, an electric wire tensioning tool is attached to an electric wire stretched between adjacent electric poles to cut the electric wire. Then, when the stop valve is opened and the operation switch is turned on to start the rechargeable hydraulic pump, the hydraulic oil in the oil tank is sucked into the rechargeable hydraulic pump, becomes pressure oil, and flows from the rechargeable hydraulic pump to the introduction path of the valve device. Is ejected. The pressure oil discharged to this introduction path is guided to the left and right hydraulic cylinders, and each hydraulic cylinder is shortened against the biasing force of the compression spring built in the cylinder.
The distance between the left and right electric wire grips is narrowed. For this reason,
The electric wires on both the left and right sides are gripped by the wire gripping portion and stretched without loosening. And the pressure in the introduction path is, for example, 100 kgf / cm
When the pressure rises to 2 , the pressure switch is turned off and the rechargeable hydraulic pump stops. When the tensile force of the electric wire decreases and the pressure in the introduction path decreases to less than 100 kgf / cm 2, for example,
The pressure switch is turned on, the rechargeable hydraulic pump is restarted, the pressure in the introduction path rises, and the hydraulic cylinders on the left and right sides are shortened. Therefore, the tensile force of the electric wire can always maintain the set tensile force of 100 kgf / cm 2 .
【００１１】なお、このような設定張力が電線に作用し
ている状態で、例えば、電線に外力が加わり、電線の引
張力が設定張力を越え、左右両側の油圧シリンダが伸長
して導入路内の圧力が例えば１１０kgｆ／cm2 に上昇す
ると、リリーフ弁が開き、導入路内の圧油がリリーフ
弁、及びその下流側の導出路を通って油タンクに流出さ
れる。このため、導入路及びリリーフ弁の上流側の導出
路内の圧力が低下すると共に、油圧シリンダ内のピスト
ンが圧縮バネの付勢力により油圧シリンダの外部方向へ
押し出され、また、これと同時に、電線の引張力により
ピストンが油圧シリンダの外部方向へ引き出されて、左
右両側の油圧シリンダが伸長する。そして、導入路内の
圧力が設定圧力に低下すると、リリーフ弁が閉じて導入
路内からの圧油の流出が阻止され、左右両側の油圧シリ
ンダの伸長が停止する。It should be noted that, with such a set tension being applied to the electric wire, for example, an external force is applied to the electric wire, the tensile force of the electric wire exceeds the set tension, and the hydraulic cylinders on both the left and right sides are extended and the inside of the introduction path is expanded. When the pressure rises to 110 kgf / cm 2 , for example, the relief valve opens and the pressure oil in the introduction passage flows out to the oil tank through the relief valve and the discharge passage on the downstream side thereof. For this reason, the pressure in the introduction passage and the outlet passage on the upstream side of the relief valve decreases, and the piston in the hydraulic cylinder is pushed out by the biasing force of the compression spring toward the outside of the hydraulic cylinder. The pulling force pulls the piston toward the outside of the hydraulic cylinder, and the hydraulic cylinders on the left and right sides expand. Then, when the pressure in the introduction passage decreases to the set pressure, the relief valve is closed to prevent the pressure oil from flowing out of the introduction passage, and the expansion of the hydraulic cylinders on the left and right sides is stopped.
【００１２】さらに、リリーフ弁の開弁圧力１１０kgｆ
／cm2 より高い圧力が導入路に作用したときには、安全
弁が開き、導入路１４内の圧油が戻し弁より下流の導出
路を通って油タンクに流出される。これにより、導入路
内の圧力が１２０kgｆ／cm2以下に低下して、電線引張
具の安全が図られる。Further, the relief valve opening pressure is 110 kgf.
When a pressure higher than / cm 2 acts on the introduction passage, the safety valve opens and the pressure oil in the introduction passage 14 flows out to the oil tank through the outlet passage downstream of the return valve. As a result, the pressure in the introduction path is reduced to 120 kgf / cm 2 or less, and the electric wire pulling tool is safe.
【００１３】さらに、電線に設定張力が作用している状
態から、さらに設定張力を越えて電線を引っ張る必要が
あるときには、先ず、操作スイッチを切り、充電式油圧
ポンプを停止する。次いで、ストップ弁を閉じて導入路
内の圧油の流出を阻止し、さらに、戻し弁を開いて導出
路内の圧力を低下させ、圧力スイッチをＯＮ作動させ
る。次いで、再び操作スイッチを入れ、充電式油圧ポン
プを始動すると、リリーフ弁が作動しないため、導入路
内の圧力が設定圧力を越えて上昇する。このため、左右
両側の油圧シリンダがさらに短縮して電線の引張力が上
昇する。そして、導入路内の圧力が、例えば１２０kgｆ
／cm2 に上昇すると、安全弁が開き、導入路内の圧油が
導出路を通って油タンクに流出する。これにより、導入
路内の圧力が１２０kgｆ／cm2 以上に上昇することなく
電線引張具の安全が図られる。Further, when it is necessary to pull the electric wire beyond the set tension from the state where the set tension is applied to the electric wire, first, the operation switch is turned off and the rechargeable hydraulic pump is stopped. Next, the stop valve is closed to prevent the pressure oil from flowing out of the introduction path, and the return valve is opened to reduce the pressure in the discharge path, and the pressure switch is turned on. Next, when the operation switch is turned on again and the rechargeable hydraulic pump is started, the relief valve does not operate, and the pressure in the introduction path rises above the set pressure. Therefore, the hydraulic cylinders on both the left and right sides are further shortened, and the tensile force of the electric wire is increased. And the pressure in the introduction path is, for example, 120 kgf
When the pressure rises to / cm 2 , the safety valve opens and the pressure oil in the introduction passage flows out to the oil tank through the discharge passage. This ensures the safety of the wire pulling tool without the pressure in the introduction path rising above 120 kgf / cm 2 .
【００１４】次に、導入路内の圧力が設定圧力の状態
で、作業を終了し電線把持部を電線から取り外す場合に
は、先ず操作スイッチを切り充電式油圧ポンプを停止す
る。そして、戻し弁のレバーを押して戻し弁を開くと、
導入路内の圧油は戻し弁、及びその下流側の導出路を通
って油タンク内に流出される。このため、導入路内の圧
力が低下して左右両側の油圧シリンダは、圧縮バネの付
勢力により押圧されて伸長する。これにより、電線の引
張力が低下して電線把持部を電線から容易に取り外しす
ることができる。Next, when the work is finished and the electric wire gripping portion is removed from the electric wire with the pressure in the introduction passage being at the set pressure, first, the operation switch is turned off to stop the rechargeable hydraulic pump. Then, when you push the lever of the return valve to open the return valve,
The pressure oil in the introduction passage flows out into the oil tank through the return valve and the outlet passage on the downstream side thereof. For this reason, the pressure in the introduction path is reduced, and the hydraulic cylinders on the left and right sides are pressed and expanded by the urging force of the compression spring. Thereby, the tensile force of the electric wire is reduced, and the electric wire gripping portion can be easily removed from the electric wire.
【００１５】[0015]
【実施例】以下本発明の実施例を図面に基いて説明す
る。図１〜図４は本発明に係る電線引張具の一実施例を
示す。図１（ａ）において、アジャスタブルプーラとし
ての電線引張具１１は、作動油を導入する導入路１４と
作動油を導出する導出路１５とを内部に有する弁装置本
体１３（図２及び図３参照）を中央部に配設し、この弁
装置本体１３の左右両端にそれぞれ一直線上に左右方向
へ延設した一対の筒状支持体３１を有している。Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of an electric wire pulling tool according to the present invention. In FIG. 1A, an electric wire pulling tool 11 as an adjustable puller has a valve device main body 13 (see FIGS. 2 and 3) that has an introduction passage 14 for introducing hydraulic oil and a discharge passage 15 for discharging hydraulic oil therein. ) Is disposed in the central portion, and a pair of cylindrical support members 31 are provided at the left and right ends of the valve device main body 13 so as to extend in a straight line in the left-right direction.
【００１６】図１（ｃ）において、図１（ａ）の左側の
筒状支持体３１の先端部には、左方向へ所定長さ張出
し、左端面を密閉した円筒状のシリンダ３３を固着して
ある。このシリンダ３３の内部には、右端をシリンダ３
３に固定され、後述するピストン３５を油圧シリンダ３
８の外方へ（すなわち、図１（ａ）の左方向へ）付勢す
る伸縮自由な圧縮バネ３４と、右端をこの圧縮バネ３４
に当接し、かつシリンダ３３の内周面に摺動可能なディ
スク状のピストンヘッド３５ａとを有している。さら
に、このピストンヘッド３５ａより小径のピストンロッ
ド３５ｂをピストンヘッド３５ａに一体的に形成し、こ
のピストンロッド３５ｂをシリンダ３３の左端面に左右
方向へ往復移動可能に貫通させて、左方向へ所定長さ張
出させてある。そして、シリンダ３３の左端面とシリン
ダ３３の内周面とピストンヘッド３５ａとにより密閉さ
れた油室３７を形成するようにしてある。In FIG. 1C, a cylindrical cylinder 33 having a left end surface sealed is fixed to the tip end portion of the left cylindrical support body 31 of FIG. There is. Inside the cylinder 33, the right end is the cylinder 3
3 is fixed to the hydraulic cylinder 3
8 (i.e., to the left in FIG. 1A) and a compression spring 34 that expands and contracts freely, and a right end of the compression spring 34.
And a disk-shaped piston head 35a that is slidable on the inner peripheral surface of the cylinder 33. Further, a piston rod 35b having a diameter smaller than that of the piston head 35a is integrally formed with the piston head 35a, and the piston rod 35b is penetrated through the left end surface of the cylinder 33 so as to be reciprocally movable in the left and right directions to a predetermined length in the left direction. It is overhanging. The left end surface of the cylinder 33, the inner peripheral surface of the cylinder 33, and the piston head 35a form an oil chamber 37 that is sealed.
【００１７】なお、シリンダ３３、圧縮バネ３４、及び
ピストンヘッド３５ａとピストンロッド３５ｂから成る
ピストン３５により油圧シリンダ３８を構成している。A hydraulic cylinder 38 is constituted by the cylinder 33, the compression spring 34, and the piston 35 composed of the piston head 35a and the piston rod 35b.
【００１８】さらに、ピストンロッド３５ｂの左端に
は、電線を把持する電線把持部３９を取り付けてある。Further, an electric wire grip portion 39 for gripping an electric wire is attached to the left end of the piston rod 35b.
【００１９】また、右側の筒状支持体３１の先端部に
も、上述した油圧シリンダ３８及び電線把持部３９と同
様な油圧シリンダ３８を設け、電線把持部３９を取り付
けてある。A hydraulic cylinder 38 similar to the hydraulic cylinder 38 and the electric wire grip 39 described above is provided at the tip of the right cylindrical support 31 and the electric wire grip 39 is attached.
【００２０】さらに、後述する弁装置本体１３の導入路
出口１４ｂ（図２及び図３参照）と、左右両側の油圧シ
リンダ３８の油室３７とを接続する油圧ホース等の配管
部材４０を取り付けてある。Further, a piping member 40 such as a hydraulic hose for connecting an inlet passage outlet 14b (see FIGS. 2 and 3) of the valve device body 13 described later and the oil chambers 37 of the hydraulic cylinders 38 on the left and right sides is attached. is there.
【００２１】図１（ａ）において、右側の筒状支持体３
１の内部には、右側の油圧シリンダ３８と弁装置本体１
３との間に油タンク４１を設け、弁装置本体１３の導出
路１５と、この油タンク４１とを接続してある（図示せ
ず）。In FIG. 1A, the cylindrical support 3 on the right side
1, the right side hydraulic cylinder 38 and the valve device main body 1
An oil tank 41 is provided between the oil tank 41 and the oil tank 3, and the discharge passage 15 of the valve device body 13 is connected to the oil tank 41 (not shown).
【００２２】図１（ｂ）において、右側の筒状支持体３
１と弁装置本体１３の間には、充電式油圧ポンプ４２を
取り付け、この充電式油圧ポンプ４２の吐出口（図示せ
ず）と弁装置本体１３の導入路１４とを接続すると共
に、油タンク４１内の作動油を吸引し得るように充電式
油圧ポンプ４２の吸入口（図示せず）と油タンク４１と
を接続してある。In FIG. 1B, the cylindrical support 3 on the right side
1, a rechargeable hydraulic pump 42 is attached between the valve device main body 13 and the valve device main body 13, and a discharge port (not shown) of the rechargeable hydraulic pump 42 is connected to the introduction passage 14 of the valve device main body 13 and an oil tank is provided. The suction port (not shown) of the rechargeable hydraulic pump 42 and the oil tank 41 are connected so as to suck the hydraulic oil in the pump 41.
【００２３】さらに、充電式油圧ポンプ４２より左側の
弁装置本体１３の外面には、充電式油圧ポンプ４２に電
力を供給するバッテリ４３を取り付け、また、バッテリ
４３のカバーに充電式油圧ポンプ４２の操作スイッチ４
４を設けてある。また、１６ａはストップ弁１６のハン
ドルであり、１８ａは戻し弁１８のレバーである。Further, a battery 43 for supplying electric power to the rechargeable hydraulic pump 42 is attached to the outer surface of the valve device main body 13 on the left side of the rechargeable hydraulic pump 42, and a cover of the battery 43 is provided for the rechargeable hydraulic pump 42. Operation switch 4
4 is provided. Further, 16a is a handle of the stop valve 16, and 18a is a lever of the return valve 18.
【００２４】さらに、弁装置の構造を説明する。図２及
び図３において、弁装置本体１３の導入路１４は、充電
式油圧ポンプ４２の吐出口と接続する導入路入口１４ａ
から弁装置本体１３の長手方向（図２及び図３の左右方
向）へ延び、さらに弁装置本体１３の外周面へ向かって
径方向へ延び、弁装置本体１３の外面の導入路出口１４
ｂに通じて形成される。Further, the structure of the valve device will be described. 2 and 3, the introduction passage 14 of the valve device main body 13 is provided with an introduction passage inlet 14a that is connected to the discharge opening of the rechargeable hydraulic pump 42.
From the valve device main body 13 in the longitudinal direction (the left and right direction in FIGS. 2 and 3), and further in the radial direction toward the outer peripheral surface of the valve device main body 13, the introduction passage outlet 14 on the outer surface of the valve device main body 13.
It is formed through b.
【００２５】弁装置本体１３の導出路１５は、導入路出
口１４ｂ付近から分岐し、弁装置本体１３の長手方向へ
延び、油タンク４１に接続する導出路出口１５ａに通じ
て形成される。The outlet passage 15 of the valve device main body 13 is formed by branching from the vicinity of the inlet passage outlet 14b, extending in the longitudinal direction of the valve device main body 13, and leading to the outlet passage outlet 15a connected to the oil tank 41.
【００２６】導入路１４から分岐する導出路１５の分岐
点Ａ付近の導出路１５には、ハンドル１６ａ（図１
（ｂ）参照）を操作して、この導出路１５を開閉するス
トップ弁１６を取り付けてあり、さらに、このストップ
弁１６の下流側の導出路１５には、レバー１８ａ（図１
（ｂ）参照）を操作して導出路１５を開閉する戻し弁１
８を取り付け、この戻し弁１８とストップ弁１６の間の
導出路１５には、この導出路１５内の圧力が例えば１１
０kgｆ／cm2 に上昇すると開くリリーフ弁１７を取り付
け、このリリーフ弁１７の吐出口を戻し弁１８の下流側
の導出路１５に接続してある。さらに導入路１４には、
例えば、導入路１４内の圧力が１２０kgｆ／cm2 に上昇
すると開く安全弁１９を取り付け、この安全弁１９の吐
出口を戻し弁１８の下流側の導出路１５に接続してあ
る。A handle 16a (see FIG. 1) is attached to the lead-out path 15 near the branch point A of the lead-out path 15 branched from the lead-in path 14.
(See (b)) is operated to attach a stop valve 16 for opening and closing the lead-out passage 15. Further, a lever 18a (see FIG. 1) is provided in the lead-out passage 15 on the downstream side of the stop valve 16.
Return valve 1 that operates (see (b)) to open and close the outlet path 15.
8 is attached, and in the outlet passage 15 between the return valve 18 and the stop valve 16, the pressure in the outlet passage 15 is, for example, 11
A relief valve 17 that opens when the pressure rises to 0 kgf / cm 2 is attached, and the discharge port of this relief valve 17 is connected to the outlet passage 15 on the downstream side of the return valve 18. Furthermore, in the introduction path 14,
For example, a safety valve 19 that opens when the pressure in the introduction passage 14 rises to 120 kgf / cm 2 is attached, and the discharge port of this safety valve 19 is connected to the outlet passage 15 on the downstream side of the return valve 18.
【００２７】さらに戻し弁１８とストップ弁１６との間
の導出路１５には、導入路１４内の圧力が、例えば、１
００kgｆ／cm2 に上昇すると充電式油圧ポンプ４２をＯ
ＦＦ作動させ、９０kgｆ／cm2 に下がると、充電式油圧
ポンプ４２をＯＮ作動させる圧力スイッチ２０を取り付
けてある。Further, in the outlet passage 15 between the return valve 18 and the stop valve 16, the pressure in the inlet passage 14 is, for example, 1
When the pressure rises to 00 kgf / cm 2 , the rechargeable hydraulic pump 42 is turned off.
A pressure switch 20 for turning on the rechargeable hydraulic pump 42 when the FF is operated and the pressure drops to 90 kgf / cm 2 is attached.
【００２８】なお、本実施例の電線引張具１１の油圧回
路図を図４に示す。この図において、４５は、充電式油
圧ポンプ４２の吸入側に取り付けられた油フィルターで
あり、４６は、充電式油圧ポンプ４２の吐出側に取り付
けられ油圧シリンダ３８から弁装置本体１３を介して充
電式油圧ポンプ４２への圧油の逆流を防止する逆止弁で
ある。A hydraulic circuit diagram of the electric wire pulling tool 11 of this embodiment is shown in FIG. In this figure, 45 is an oil filter attached to the suction side of the rechargeable hydraulic pump 42, and 46 is attached to the discharge side of the rechargeable hydraulic pump 42 and charged from the hydraulic cylinder 38 via the valve device body 13. It is a check valve for preventing backflow of pressure oil to the hydraulic pump 42.
【００２９】次に、本実施例の電線引張具１１の機能を
説明する。まず、隣接する電柱の間に張られた電線に電
線把持部３９を取り付けて、電線を切断する。次いで、
ストップ弁１６を開き、操作スイッチ４４を入れ充電式
油圧ポンプ４２を始動すると、油タンク４１内の作動油
が充電式油圧ポンプ４２に吸入され、圧油となって充電
式油圧ポンプ４２から弁装置の導入路１４に吐出され
る。この導入路１４に吐出され圧油は、配管部材４０を
通って左右両側の油圧シリンダ３８の油室３７に導か
れ、圧縮バネ３４の付勢力に抗してピストン３５をシリ
ンダ３３内へ押し戻し、各油圧シリンダ３８を短縮さ
せ、左右両側の電線把持部３９の間隔が狭められる。こ
のため、左右両側の電線が電線把持部３９に把持され弛
緩なく張られる。そして、導入路１４内の圧力が、例え
ば１００kgｆ／cm2 に上昇すると、圧力スイッチ２０が
ＯＦＦ作動して充電式油圧ポンプ４２が停止する。電線
の引張力が低下し、導入路１４内の圧力が、例えば１０
０kgｆ／cm2 未満に低下すると、圧力スイッチ２０がＯ
Ｎ作動し充電式油圧ポンプ４２が再び始動し導入路１４
内の圧力が上昇して左右両側の油圧シリンダ３８が短縮
する。このため、導入路１４内の圧力は、設定圧力１０
０kgｆ／cm2 を（すなわち、電線の引張力は、設定引張
力１００kgｆ／cm2 を）保持することができる。Next, the function of the wire pulling tool 11 of this embodiment will be described. First, the electric wire grip portion 39 is attached to the electric wire stretched between the adjacent electric poles, and the electric wire is cut. Then
When the stop valve 16 is opened, the operation switch 44 is turned on, and the rechargeable hydraulic pump 42 is started, the hydraulic oil in the oil tank 41 is sucked into the rechargeable hydraulic pump 42 to become pressure oil, and the rechargeable hydraulic pump 42 operates as a valve device. Is discharged to the introduction passage 14 of. The pressure oil discharged to the introduction passage 14 is guided to the oil chambers 37 of the hydraulic cylinders 38 on the left and right sides through the piping member 40, and pushes the piston 35 back into the cylinder 33 against the biasing force of the compression spring 34. The hydraulic cylinders 38 are shortened, and the distance between the left and right electric wire grips 39 is narrowed. For this reason, the electric wires on both the left and right sides are gripped by the wire grip portion 39 and stretched without loosening. When the pressure in the introduction passage 14 rises to 100 kgf / cm 2 , for example, the pressure switch 20 is turned off and the rechargeable hydraulic pump 42 is stopped. The tensile force of the electric wire is reduced, and the pressure in the introduction path 14 is, for example, 10
When the pressure falls below 0 kgf / cm 2 , the pressure switch 20 turns off.
N operation is performed, the rechargeable hydraulic pump 42 is restarted, and the introduction path 14
The internal pressure rises and the left and right hydraulic cylinders 38 contract. Therefore, the pressure in the introduction passage 14 is set to 10
It is possible to hold 0 kgf / cm 2 (that is, the tensile force of the electric wire is a set tensile force of 100 kgf / cm 2 ).
【００３０】なお、このような設定引張力が電線に作用
している状態で、例えば電線に外力が加わり、電線の引
張力が設定引張力を越え、左右両側の油圧シリンダ３８
が伸長して導入路１４内の圧力が例えば１１０kgｆ／cm
2 に上昇すると、リリーフ弁１７が開き、シリンダ３３
内の圧油がリリーフ弁１７、及びその下流側の導出路１
５を通って油タンク４１に流出される。このため、シリ
ンダ３３内の圧力が次第に低下すると共に、圧縮バネ３
４の付勢力によりピストン３５が油圧シリンダ３８の外
方へ押し出され、また、これと同時に、電線の引張力に
よりピストン３５が油圧シリンダ３８の外方へ引き出さ
れて左右両側の油圧シリンダ３８が伸長する。そして、
導入路１４内の圧力が設定圧力に低下すると、リリーフ
弁１７が閉じてシリンダ３３内からの圧油の流出が阻止
され、左右両側の油圧シリンダ３８の伸長が停止する。
このとき電線の引張力は設定引張力になっている。It should be noted that, with such a set tensile force acting on the electric wire, for example, an external force is applied to the electric wire, the tensile force of the electric wire exceeds the set tensile force, and the hydraulic cylinders 38 on both left and right sides are provided.
Is extended and the pressure in the introduction path 14 is 110 kgf / cm, for example.
When the pressure rises to 2 , the relief valve 17 opens and the cylinder 33
The pressure oil inside the relief valve 17 and the outlet passage 1 on the downstream side of the relief valve 17.
The oil flows out through the oil tank 5 into the oil tank 41. Therefore, the pressure in the cylinder 33 gradually decreases, and the compression spring 3
The piston 35 is pushed out of the hydraulic cylinder 38 by the urging force of No. 4, and at the same time, the piston 35 is pulled out of the hydraulic cylinder 38 by the pulling force of the electric wire, and the hydraulic cylinders 38 on the left and right sides are extended. To do. And
When the pressure in the introduction passage 14 drops to the set pressure, the relief valve 17 is closed to prevent the pressure oil from flowing out of the cylinder 33, and the extension of the hydraulic cylinders 38 on the left and right sides is stopped.
At this time, the tensile force of the electric wire is the set tensile force.
【００３１】安全弁１９は、電線に設定引張力が作用し
ている状態から、さらに設定引張力を越えて電線を引っ
張る必要があるときに使用される。先ず、操作スイッチ
４４を切り、充電式油圧ポンプ４２を停止する。次い
で、ストップ弁１６を閉じて導入路１５内の圧油の流出
を阻止し、さらに、戻し弁１８を開いて導出路１５内の
圧力を低下させ、圧力スイッチ２０をＯＮ作動させる。
次いで、再び操作スイッチ４４を入れ、充電式油圧ポン
プ４２が始動すると、リリーフ弁１７が作動しないの
で、導入路１４内の圧力が設定圧力以上に上昇する。こ
のため、左右両側の油圧シリンダ３８がさらに短縮して
電線の引張力が上昇する。そして、導入路１４内の圧力
が例えば１２０kgｆ／cm2 に上昇すると、安全弁１９が
開き、導入路１４内の圧油が導出路１５に流出すると共
に、導入路１４内の圧力が一時的に低下する。このと
き、導入路１４内の圧力は、設定圧力より高い所定の圧
力となって保持される。従って、電線の引張力も設定引
張力より高い引張力となって保持される。そして、この
ような状態は、操作スイッチ４４をＯＦＦ作動して充電
式油圧ポンプ４２を停止するまで持続される。The safety valve 19 is used when it is necessary to pull the electric wire beyond the set tensile force from the state where the set tensile force is applied to the electric wire. First, the operation switch 44 is turned off to stop the rechargeable hydraulic pump 42. Next, the stop valve 16 is closed to prevent the pressure oil from flowing out of the introduction passage 15, and the return valve 18 is opened to reduce the pressure in the discharge passage 15 to turn on the pressure switch 20.
Next, when the operation switch 44 is turned on again and the rechargeable hydraulic pump 42 is started, the relief valve 17 does not operate, so that the pressure in the introduction passage 14 rises above the set pressure. Therefore, the hydraulic cylinders 38 on the left and right sides are further shortened, and the tensile force of the electric wire is increased. Then, when the pressure in the introduction passage 14 rises to, for example, 120 kgf / cm 2 , the safety valve 19 opens, the pressure oil in the introduction passage 14 flows out to the discharge passage 15, and the pressure in the introduction passage 14 temporarily decreases. To do. At this time, the pressure in the introduction passage 14 is maintained at a predetermined pressure higher than the set pressure. Therefore, the tensile force of the electric wire is maintained as a tensile force higher than the set tensile force. Then, such a state is maintained until the operation switch 44 is turned off and the rechargeable hydraulic pump 42 is stopped.
【００３２】次に、導入路１４内の圧力が設定圧力の状
態で作業が終了し、電線引張具１１を電線から取り外す
場合には、先ず、操作スイッチ４４を切り充電式油圧ポ
ンプ４２を停止する。そして、戻し弁１８のレバー１８
ａを押して戻し弁１８を開くと、導入路１４内の圧油は
戻し弁１８、その下流側の導出路１５を通って油タンク
４１内に流出される。このため、導入路１４内の圧力が
低下して左右両側の油圧シリンダ３８は、圧縮バネ３４
の付勢力により押圧されて伸長する。これにより、電線
の引張力が低下して電線把持部３９を電線から容易に取
り外しすることができる。Next, when the work is finished with the pressure in the introduction passage 14 at the set pressure and the wire pulling tool 11 is to be removed from the wire, first, the operation switch 44 is turned off to stop the rechargeable hydraulic pump 42. . Then, the lever 18 of the return valve 18
When the return valve 18 is opened by pressing a, the pressure oil in the introduction passage 14 flows out into the oil tank 41 through the return valve 18 and the outlet passage 15 on the downstream side thereof. For this reason, the pressure in the introduction path 14 is reduced, and the hydraulic cylinders 38 on the left and right sides are compressed by the compression springs 34.
It is pushed and extended by the urging force of. As a result, the tensile force of the electric wire is reduced, and the electric wire grip portion 39 can be easily removed from the electric wire.
【００３３】次に、このような機能を有する本実施例の
電線引張具１１を、既設電柱に張られた電線を新設電柱
に移し替える作業に使用する場合について説明する。先
ず、電線引張具１１を高所作業車のウインチ等（図示せ
ず）に吊り下げ、一対の電線把持部３９を左右に拡げて
電線に取り付けると共に、停電時間を短縮するために、
バイパスケーブルを取り付ける。Next, the case where the electric wire pulling tool 11 of this embodiment having such a function is used for the work of transferring the electric wire stretched on the existing electric pole to the new electric pole will be described. First, the electric wire pulling tool 11 is hung on a winch or the like (not shown) of an aerial work vehicle, and the pair of electric wire grips 39 are expanded to the left and right to be attached to the electric wire, and in order to shorten the power failure time,
Install the bypass cable.
【００３４】そして、ストップ弁１６を開き、操作スイ
ッチ４４を入れ、充電式油圧ポンプ４２を始動する。こ
のとき、左右両側の油圧シリンダ３８が短縮して電線の
引張力が設定引張力１００kgｆ／cm2 （すなわち導入路
１４内の圧力が設定圧力１００kgｆ／cm2 ）に達して、
充電式油圧ポンプ４２が停止する。次いで、電線を既設
電柱に固定しているバインド線を取り外して、一対の電
線把持部３９の間で電線を切断する。さらに、ウインチ
で電線を把持した電線引張具１１を吊り下げて、新設電
柱に移動する。Then, the stop valve 16 is opened, the operation switch 44 is turned on, and the rechargeable hydraulic pump 42 is started. At this time, the hydraulic cylinders 38 on both the left and right sides are shortened, and the tensile force of the electric wire reaches the set tensile force of 100 kgf / cm 2 (that is, the pressure in the introduction passage 14 is the set pressure of 100 kgf / cm 2 ).
The rechargeable hydraulic pump 42 stops. Next, the bind wire that fixes the electric wire to the existing electric pole is removed, and the electric wire is cut between the pair of electric wire grips 39. Further, the electric wire pulling tool 11 holding the electric wire with a winch is suspended and moved to a new electric pole.
【００３５】この電線を把持した電線引張具１１の移動
の際、電線の長さが変化して電線の引張力が変化しよう
とする。しかし、電線の引張力が設定引張力１００kgｆ
／cm2 （すなわち導入路１４内の圧力が設定圧力１００
kgｆ／cm2 ）未満に低下すると、圧力スイッチ２０がＯ
Ｎ作動し充電式油圧ポンプ４２が始動し油圧シリンダ３
８が短縮して電線の引張力が設定引張力１００kgｆ／cm
2 （導入路１４内の圧力が設定圧力１００kgｆ／cm2 ）
に上昇する。このとき、圧力スイッチ２０がＯＦＦ作動
し充電式油圧ポンプ４２が停止して油圧シリンダ３８の
短縮が停止する。さらに、電線の引張力が１１０kgｆ／
cm2 （すなわちリリーフ弁１７の開弁圧力１１０kgｆ／
cm2 ）を越えるときには、リリーフ弁１７が作動し油圧
シリンダ３８が伸長して電線の引張力が設定引張力１１
０kgｆ／cm2 （すなわちリリーフ弁１７の設定圧力１１
０kgｆ／cm2 ）以下に低下する。このため、電線の長さ
が変化しても、電線の引張力を自動的に設定引張力に保
持することができ、電線の長さが変化する都度、作業者
がいちいち操作スイッチ４４を操作する必要がなくな
り、本実施例の電線引張具１１は作業性を著しく向上す
ることができる。When the electric wire pulling tool 11 holding this electric wire is moved, the length of the electric wire changes and the tensile force of the electric wire tends to change. However, the tensile force of the wire is 100 kgf.
/ Cm 2 (that is, the pressure in the introduction passage 14 is set pressure 100
When kgf / cm 2) drops below the pressure switch 20 is O
N operation, the rechargeable hydraulic pump 42 starts and the hydraulic cylinder 3
8 shortens and the tensile force of the wire is 100 kgf / cm
2 (The pressure inside the inlet 14 is 100kgf / cm 2 )
Rise to. At this time, the pressure switch 20 is turned off, the rechargeable hydraulic pump 42 is stopped, and the shortening of the hydraulic cylinder 38 is stopped. Furthermore, the tensile force of the wire is 110 kgf /
cm 2 (that is, the opening pressure of the relief valve 17 is 110 kgf /
cm 2 ), the relief valve 17 operates and the hydraulic cylinder 38 expands so that the tensile force of the electric wire is equal to the set tensile force 11
0 kgf / cm 2 (that is, the set pressure of the relief valve 17 is 11
0 kgf / cm 2 ) or less. Therefore, even if the length of the electric wire changes, the tensile force of the electric wire can be automatically maintained at the set tensile force, and the operator operates the operation switch 44 each time the length of the electric wire changes. It is not necessary, and the wire pulling tool 11 of this embodiment can remarkably improve workability.
【００３６】そして、電線を把持した電線引張具１１を
新設電柱に移動した後、切断した電線の間に新たな電線
を足して接続し、この接続した電線を新設電柱にバイン
ド線で取り付けて、バイパスケーブルを取り外す。Then, after moving the wire pulling tool 11 holding the electric wire to the new electric pole, a new electric wire is added and connected between the cut electric wires, and the connected electric wire is attached to the new electric pole with a bind wire. Remove the bypass cable.
【００３７】さらに、電線引張具１１の操作スイッチ４
４を切り、レバー１８ａを押して戻し弁１８を開き、左
右両側の油圧シリンダ３８を伸長すると、一対の電線把
持部３９が緩み電線把持部３９を電線から容易に取り外
しすることができて、電線の移し替え作業を完了するこ
とができる。Further, the operation switch 4 of the electric wire pulling tool 11
4 is cut, the return valve 18 is opened by pushing the lever 18a, and the hydraulic cylinders 38 on both the left and right sides are extended, the pair of electric wire grips 39 is loosened, and the electric wire grips 39 can be easily removed from the electric wire. The transfer work can be completed.
【００３８】[0038]
【発明の効果】以上説明したように本発明によれば、隣
接する電柱の間に張られた電線に電線把持部を取り付け
て電線を切断し、ストップ弁を開き操作スイッチを入れ
ると、電線の張力を設定張力に保持できるので、例え
ば、本発明に係る電線把持具を、既設電柱から新設電柱
に電線を移し替える作業に使用する場合には、電線を既
設電柱から新設電柱に移動する際に、電線の長さが変化
して電線の引張力が変化しようとするが、この電線の長
さの変化に応じて、自動的に油圧シリンダが伸縮して電
線の引張力を設定引張力に保持することができるので、
電線把持具の操作が極めて容易となり、作業性を著しく
向上することができる。As described above, according to the present invention, when the electric wire gripping portion is attached to the electric wire stretched between the adjacent electric poles to cut the electric wire, and the stop valve is opened to turn on the operation switch, the electric wire Since the tension can be maintained at the set tension, for example, when the wire gripper according to the present invention is used for the work of transferring the electric wire from the existing electric pole to the new electric pole, when the electric wire is moved from the existing electric pole to the new electric pole. , The length of the wire changes and the pulling force of the wire tries to change, but the hydraulic cylinder automatically expands and contracts according to the change in the length of the wire to keep the pulling force of the wire at the set pulling force. Because you can
The operation of the wire gripping tool becomes extremely easy, and the workability can be significantly improved.
【図１】（ａ）は本発明に係る電線引張具の一実施例を
示す一部破断全体正面図であり、（ｂ）は図１（ａ）に
おける弁装置の部分の拡大正面図であり、（ｃ）は図１
（ａ）における油圧シリンダの部分の拡大断面図であ
る。FIG. 1 (a) is a partially cutaway overall front view showing an embodiment of an electric wire tensioning tool according to the present invention, and FIG. 1 (b) is an enlarged front view of a portion of a valve device in FIG. 1 (a). , (C) is shown in FIG.
It is an expanded sectional view of a portion of a hydraulic cylinder in (a).
【図２】（ａ）は導入路に設定圧力以下の圧力が作用し
たときの状態を示す図１の電線引張具の弁装置本体の断
面図であり、（ｂ）は導入路に設定圧力を越える圧力が
作用してリリーフ弁が開いたときの状態を示す図１の電
線引張具の弁装置本体の断面図である。2 (a) is a cross-sectional view of the valve device body of the wire pulling device of FIG. 1 showing a state in which a pressure equal to or lower than a set pressure is applied to the introduction path, and FIG. It is sectional drawing of the valve apparatus main body of the electric wire pulling tool of FIG. 1 which shows the state when the pressure which exceeds is applied and a relief valve opens.
【図３】（ａ）は戻し弁を開き、導入路内の作動油を排
出している状態を示す図１の電線引張具の弁装置本体の
断面図であり、（ｂ）はストップ弁を閉じ、安全弁が開
いた状態を示す図１の電線引張具の弁装置本体の断面図
である。3 (a) is a cross-sectional view of the valve device main body of the electric wire pulling device of FIG. 1 showing a state in which the return valve is opened and the hydraulic oil in the introduction path is discharged, and FIG. 3 (b) is a stop valve. FIG. 2 is a cross-sectional view of the valve device main body of the wire pulling device of FIG. 1 showing a state in which the safety valve is closed and the safety valve is opened.
【図４】図１の電線引張具の油圧配管回路図である。FIG. 4 is a hydraulic piping circuit diagram of the electric wire pulling device of FIG. 1.
１１ 電線引張具（アジャスタブルプーラ） １３ 弁装置本体 １４ 導入路 １５ 導出路 １６ ストップ弁 １７ リリーフ弁 １８ 戻し弁 １９ 安全弁 ２０ 圧力スイッチ ３１ 筒状支持体 ３３ シリンダ ３４ 圧縮バネ ３５ ピストン ３８ 油圧シリンダ ３９ 電線把持部 ４１ 油タンク ４２ 充電式油圧ポンプ ４３ バッテリ 11 Electric Wire Tension Tool (Adjustable Puller) 13 Valve Device Main Body 14 Inlet Path 15 Outlet Path 16 Stop Valve 17 Relief Valve 18 Return Valve 19 Safety Valve 20 Pressure Switch 31 Cylindrical Support 33 Cylinder 34 Compression Spring 35 Piston 38 Hydraulic Cylinder 39 Electric Wire Grip 41 Oil tank 42 Rechargeable hydraulic pump 43 Battery
フロントページの続き (72)発明者 青山 貞幸 長野県長野市柳町18番地 中部電力株式会 社長野営業所内 (72)発明者 寺島 敬雄 長野県長野市柳町18番地 中部電力株式会 社長野営業所内 (72)発明者 門口 哲 愛知県名古屋市港区千年３−１−32 株式 会社トーエネック本店別館内 (72)発明者 二木 靖 長野県松本市大字笹賀3039番地 株式会社 泉精器製作所内 (72)発明者 岩間 保 大阪府大東市太子田３丁目４番31号 株式 会社永木精機内Front page continuation (72) Inventor Sadayuki Aoyama 18 Yanagicho, Nagano City, Nagano Chuo Electric Power Co., Inc., President's Sales Office (72) Inventor Takao Terashima 18 Yanagimachi, Nagano City, Nagano Chubu Electric Power Co., Ltd., President's No Sales Office (72 ) Inventor Satoshi Kadoguchi 3-1-32, Chiennen, Minato-ku, Aichi Prefecture, Toeneck Co., Ltd.Annex (72) Inventor Yasushi Yagi 3039, Sasaga, Matsumoto City, Nagano Prefecture Izumi Seiki Co., Ltd. (72) Invention Person Iwama Tamotsu 3-43, Taishida, Daito City, Osaka Prefecture Nagaki Seiki Co., Ltd.
Claims (4)
し替える等の際に使用され、電線の引張力を調整する電
線引張具であって、 バッテリを有する充電式油圧ポンプと、 前記充電式油圧ポンプの吐出圧力を制御する弁装置と、 前記弁装置の本体の左右側両端から、略一直線上に延設
した一対の筒状支持体と、 前記一対の筒状支持体の各先端部に一体的に構成され、
前記弁装置を介して伝達される前記充電式油圧ポンプの
吐出圧力により左右方向へ伸縮自在な油圧シリンダと、 前記充電式油圧ポンプに作動油を供給すると共に、前記
弁装置から排出された作動油を受け入れる油タンクと、 前記左右両側の油圧シリンダの先端に取り付けられた電
線把持部と、を備えて成ることを特徴とする電線引張
具。1. A wire tensioning tool for adjusting a tensile force of an electric wire, which is used when an electric wire stretched over an existing electric pole is transferred to a new electric pole, and a rechargeable hydraulic pump having a battery; Valve device for controlling the discharge pressure of the hydraulic pump, a pair of cylindrical supports extending substantially straight from the left and right ends of the main body of the valve device, and tip portions of the pair of cylindrical supports Integrated into
A hydraulic cylinder that is capable of expanding and contracting in the left-right direction by the discharge pressure of the rechargeable hydraulic pump transmitted through the valve device, and hydraulic oil that is supplied to the rechargeable hydraulic pump and is discharged from the valve device. An electric wire pulling tool, comprising: an oil tank for receiving the electric oil; and electric wire gripping parts attached to the ends of the left and right hydraulic cylinders.
ら吐出された作動油を前記左右両側の油圧シリンダへ導
く導入路と、 前記導入路から分岐し、前記充電式油圧ポンプ及び前記
左右両側の油圧シリンダから吐出された作動油を前記油
タンクへ導く導出路と、 前記導出路に設置され前記導出路を開閉するストップ弁
と、 前記ストップ弁より下流側の導出路に設置され前記導出
路を開閉する戻し弁と、 前記ストップ弁と前記戻し弁との間の導出路に取り付け
られ、前記導出路内の圧力が設定圧力を越えると、開弁
して前記導入路内の作動油を排出し、前記導入路内の圧
力を設定圧力に低下させるリリーフ弁と、 前記ストップ弁と前記戻し弁との間の導出路に取り付け
られ、前記リリーフ弁の開弁圧力より低い圧力でＯＮ、
ＯＦＦ作動して充電式油圧ポンプを始動、停止させる圧
力スイッチと、 前記ストップ弁より上流側の導入路に取り付けられ、前
記リリーフ弁の開弁圧力より高い所定圧力で開き、この
所定圧力以下に導入路内の圧力を低下させる安全弁と、
から成る請求項１記載の電線引張具。2. The valve device includes an introduction path that guides hydraulic fluid discharged from the rechargeable hydraulic pump to the hydraulic cylinders on the left and right sides, and a branch from the introduction path, the rechargeable hydraulic pump and the left and right sides. Of the hydraulic cylinder discharged from the hydraulic cylinder to the oil tank, a stop valve installed in the discharge path for opening and closing the discharge path, and a discharge path installed in the discharge path downstream of the stop valve. Is attached to a return valve between the stop valve and the return valve for opening and closing the valve, and when the pressure in the discharge passage exceeds a set pressure, the valve is opened to discharge the hydraulic oil in the introduction passage. And a relief valve that reduces the pressure in the introduction passage to a set pressure, and a relief valve that is attached to a discharge passage between the stop valve and the return valve and that is ON at a pressure lower than the opening pressure of the relief valve,
A pressure switch that is turned off to start and stop the rechargeable hydraulic pump, and is installed in an introduction path upstream of the stop valve, opens at a predetermined pressure higher than the opening pressure of the relief valve, and is introduced below this predetermined pressure. Safety valve to reduce the pressure in the road,
The electric wire tensioning tool according to claim 1, which comprises:
リは、前記一対の筒状支持体の間に取り付け、前記油タ
ンクは、前記弁装置本体と前記油圧シリンダとの間の前
記筒状支持体の内部に設けて成る請求項１記載の電線引
張具。3. The rechargeable hydraulic pump and the battery are mounted between the pair of tubular supports, and the oil tank is provided between the valve device body and the hydraulic cylinder. The electric wire tensioning tool according to claim 1, which is provided inside.
したピストンを該シリンダの外方へ付勢する圧縮ばねを
有して成る請求項１記載の電線引張具。4. The wire tensioning tool according to claim 1, wherein the hydraulic cylinder has a compression spring for urging a piston fitted in the cylinder outward of the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5634395A JPH08251741A (en) | 1995-03-15 | 1995-03-15 | Electric-wire tension tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5634395A JPH08251741A (en) | 1995-03-15 | 1995-03-15 | Electric-wire tension tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08251741A true JPH08251741A (en) | 1996-09-27 |
Family
ID=13024595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5634395A Pending JPH08251741A (en) | 1995-03-15 | 1995-03-15 | Electric-wire tension tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08251741A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100649664B1 (en) * | 2006-09-07 | 2006-11-29 | 한국종합설계 주식회사 | Apparatus of automatic tension regulate using transmission tower |
| CN105107764A (en) * | 2015-08-28 | 2015-12-02 | 浙江省送变电工程公司 | Double hook upending maintaining device and method |
| KR20160128864A (en) * | 2015-04-29 | 2016-11-08 | 미래인더스트리(주) | Apparatus for winch test |
| CN114961392A (en) * | 2022-06-09 | 2022-08-30 | 崔春秀 | Electric power wire pole of building temporarily |
| CN115012719A (en) * | 2022-06-09 | 2022-09-06 | 崔春秀 | Electric power wire pole |
-
1995
- 1995-03-15 JP JP5634395A patent/JPH08251741A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100649664B1 (en) * | 2006-09-07 | 2006-11-29 | 한국종합설계 주식회사 | Apparatus of automatic tension regulate using transmission tower |
| KR20160128864A (en) * | 2015-04-29 | 2016-11-08 | 미래인더스트리(주) | Apparatus for winch test |
| CN105107764A (en) * | 2015-08-28 | 2015-12-02 | 浙江省送变电工程公司 | Double hook upending maintaining device and method |
| CN114961392A (en) * | 2022-06-09 | 2022-08-30 | 崔春秀 | Electric power wire pole of building temporarily |
| CN115012719A (en) * | 2022-06-09 | 2022-09-06 | 崔春秀 | Electric power wire pole |
| CN115012719B (en) * | 2022-06-09 | 2023-11-24 | 达拉特旗芮丰电力器材有限责任公司 | Electric power telegraph pole |
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